Counter circuit, analog-to-digital converter (ADC) including a counter circuit, image sensor including counter circuit and/or ADC, systems associated therewith, and method associated therewith

摘要

In one embodiment, the counter circuit is associated with a pixel array and includes a plurality of counting circuits. Each counting circuit is configured to receive an associated input signal, and each input signal is associated with a different column of the pixel array. A first of the plurality of counting circuits is configured to count based on the associated input signal. Each subsequent counting circuit in the plurality of counting circuits is configured to count based on a difference between the associated input signal and the input signal associated with a preceding counting circuit.